[JS IR BE] Support property accessors with @JsName

compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/transformers/irToJs/IrElementToJsExpressionTransformer.kt

@@ -8,6 +8,7 @@ package org.jetbrains.kotlin.ir.backend.js.transformers.irToJs
 import org.jetbrains.kotlin.descriptors.ClassKind
 import org.jetbrains.kotlin.ir.backend.js.utils.JsGenerationContext
 import org.jetbrains.kotlin.ir.backend.js.utils.Namer
+import org.jetbrains.kotlin.ir.backend.js.utils.getJsName
 import org.jetbrains.kotlin.ir.backend.js.utils.realOverrideTarget
 import org.jetbrains.kotlin.ir.declarations.IrClass
 import org.jetbrains.kotlin.ir.declarations.IrConstructor
@@ -136,7 +137,8 @@ class IrElementToJsExpressionTransformer : BaseIrElementToJsNodeTransformer<JsEx
         val arguments = translateCallArguments(expression, context)
 
         // Transform external property accessor call
-        if (function is IrSimpleFunction) {
+        // @JsName-annotated external property accessors are translated as function calls
+        if (function is IrSimpleFunction && function.getJsName() == null) {
             val property = function.correspondingProperty
             if (property != null && property.isEffectivelyExternal()) {
                 val nameRef = JsNameRef(context.getNameForDeclaration(property), jsDispatchReceiver)

js/js.translator/testData/box/jsName/jsNamePropertyAccessors.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JS_IR
 // EXPECTED_REACHABLE_NODES: 1285
 package foo